Borderlands 3Skill Tree Calculator

Every N^th shot from you or Iron Bear won't consume ammo and adds Bonus Fire Damage to your Gun Damage.

Equips Iron Bear with a mannable Turret.
While manned, Iron Bear and its rider deal increased Damage.

Iron Cub always deals increased Damage instead.

Bear Damage: +50% (twice)
Turret Damage: +50%
Cub Damage: +20%

Increases your Magazine Size for every equipped item that matches your held gun's Manufacturer.

Increases your and Iron Bear's Fire Damage.

Scoring a Critical Hit, grants Health and Ammo Regeneration for a short time.
Launcher Ammo regenerates slower.

Duration: 3s

Moving increases your Gun Damage, Handling, Weapon Swap Speed and Mode Switch Speed.

You can now sprint and shoot at the same time.
You also gain Lifesteal while sprinting.

Sprinting Lifesteal: +8%

Increases your Fire Rate, Critical Damage, and Skill Damage.
Iron Bear/Cub receive double these bonuses*.

Increases your Magazine Size and Heat per Shot*.

*Bug: Should decrease Heat per Shot.

Equipping Iron Bear with duplicate Weapons increases their Damage.

Bear/Cub Gun Damage: +60%

On Action Skill End you gain Infinite Ammo for a short time.

Increases your Gun Damage.
The emptier your Magazine or the hotter your COV the greater this Bonus*.

You gain passive Ammo Regeneration.
Launcher Ammo regenerates slower.

Ammo Regen/s: +5%
Launcher Ammo Regen/s: +0.5%

Your Area Damage deals extra Fire Skill Damage*.

Iron Bear's weapons drain less Fuel.

Killing an enemy refuels Iron Bear.
This has diminishing returns and Auto Bear is unaffected.

Killing an enemy reduces your Skill Cooldown.
This effect has diminishing returns*.

Dealing Area Damage has a chance to return a Grenade or add Ammo to your magazine.
This skill has a short cooldown.

Cooldown: 0.3s

Increases your and Iron Bear's Area Damage.

Your and Iron Bear's Area Damage has a chance to double its size.

Area Damage Radius: +100%

Increases Skill Damage, Maximum Fuel and Iron Bear Health.

Note:
Iron Bear/Cub receive this Skill Damage twice.

Your Grenades can now score Critical Hits, doubling their damage.

Grenade Critical Hits are unaffected by Crit Damage Bonuses.

After you exit Iron Bear he remains in place and attacks nearby enemies for a duration.

When the duration ends Iron Bear charges at an enemy and self-destructs, dealing Physical Area Skill Damage.

Duration: 15s

Note:
Exiting Iron Bear treats your Action Skill as ended.

Dealing Grenade Damage restores a portion of your Health.
When Iron Bear/Cub deal Area Damage they restore Health.

Increases your Grenade Carrying Capacity.

You can now throw grenades while in Fight For Your Life.

Gaining a Second Wind with a Grenade refunds the grenade.

Dealing Area Damage increases your Skill Cooldown Rate for a short time.

Duration: 3s

Dealing Gun Damage has a chance to trigger* an Explosion, dealing Physical Area Damage.
This has a short Cooldown.

Chance: 20% per projectile
‍Damage: 50% of damage dealt
Cooldown: 0.1s

Reloading consumes a portion of your current Health and adds Bonus Fire Damage to the team's Gun Damage for a short time.

Iron Bear gets equipped with a Bubble Shield and increased Damage Reduction.
The Bubble Shield is not weak to any Element.

Iron Cub receives increased Damage Reduction.

Bear Max-Shield: 50% of Max-Health
Bear Shield Recharge Delay: 5s
Bear Damage Reduction: +25%

Cub Damage Reduction: +50%

While your Shield is active, you gain increased Gun Damage and Damage Resistance.

Killing an enemy stacks Gun Damage for you, Iron Bear/Cub, and allies but reduces your Fire Rate for a short time.

Max Stacks: 3
Stack Duration: 15s

Auto-Bear doesn't benefit.

A portion of your Health is transformed into Maximum Shield.

Increases your Shield Recharge Rate, Maximum Shield, and Shock Resistance.

Activating your Action Skill increases the Team's Shield Recharge Rate and sets Recharge Delay to 0 for 2s.

On Action Skill End you gain increased Damage Resistance and your Recharge Delay is set to 0 for 5s.

‍Team: Recharge Rate: +25%
Damage Resistance: +50%

Your and Iron Bear/Cub's Critical Hits deal Bonus Fire Damage.

Improves your Shield Recharge Rate and Delay.

Increases your Gun Damage.
The lower your Health the greater this bonus.

Increases Iron Bear/Cub's Damage.
The lower their Health the greater this bonus.

Killing an enemy grants you stacking Gun Damage, Maximum Shield, and Iron Bear Left-Arm Damage for a long time.

Max Stacks: 99
Stack Duration: 30s

Getting a Critical Kill restores a portion of your Shield and starts its Recharge.

Max-Shield Restored: 10%

When your Shield breaks it instantly restores a portion and you gain increased Gun Damage for a long time.
Your Shield needs to fully Recharge for this effect.

If your shield breaks while Iron Bear/Cub is active their Left-Arm receives this bonus.

Max-Shield Restored: 40%
Gun Damage: +30%
‍Duration: 30s

When you or Iron Bear/Cub ignite an enemy, you two gain Health Regeneration for a short time.

Duration: 8s

While your Action Skill is on Cooldown, all Damage you deal does extra Fire Skill Damage*.

Increases Iron Bear/Cub's Damage.

Auto-Bear is not affected.

While your Action Skill is active, you and Iron Bear/Cub gain increased Movement Speed.

Increases your Gun Damage with elemental guns.

Each equipped item that matches your gun's primary element* increases this bonus.

Increases your and Iron Bear's Status Effect Damage and Chance.

Bug: Bonuses are not working.

When you or Iron Bear apply a Status Effect to an enemy, you gain stacking Fire Rate and Burst-Fire Delay for a short time.

‍Max Stacks: 5
‍Stack Duration: 12s
‍Fire Rate: +5% /stack
Burst-Fire Delay: +5% /stack

Increases your Skill Cooldown Rate and Maximum Fuel.

When you or Iron Bear apply a Status Effect to an enemy, Iron Bear gains Fuel.
This effect has diminishing returns.

Increases Iron Bear/Cub's Damage and Damage Resistance.

Auto-Bear is unaffected.

When you or Iron Bear apply a Status Effect on an enemy you gain stacking Skill Cooldown Rate for a short time.

Max Stacks: 10
Stack Duration: 12s

When you or Iron Bear apply a Status Effect to an enemy, only you gain increased Status Effect Damage and Cryo Damage for a short time.

‍Max Stacks: 5
‍Stack Duration: 8s
‍Status Effect Damage: +20%
Cryo Damage: +20%

When you or Iron Bear ignite an enemy, Iron Bear stops passively consuming Fuel for a short time.

Duration: 6s